The EV9984-45 CES-2900E-341-DP Dual Tank Softener has a Meter initiated regeneration minimizes salt, water, and electrical costs. Also the EV9984 is equipped with a water Conditioning for Commercial and Light Industrial Applications Available in Duplex Parallel System with 1-1/2" Porting. This machine very user friendly because it is easy to adjust and maintain. This product has everything a person can want from Water Softening/Conditioning to Ion reduction.